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Archaebacteria differ from eubacteria in ______.

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Important Questions on Biological Classification

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Bacteria are grouped under four categories based on their shape. Study the given figure and identify A. B. C and D?

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'Diatoms' the chief producers in the ocean belongs to group           
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The given statements describe a group of organisms. Which of the following group is referred here ?
(i) Instead of a cell wall they have a protein rich pellicle making their body flexible
(ii) They have 2 flagella, a short and a long one
(iii) They show mixotroplic nutrition
(iv) They are connecting link between plants and animals

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Match the following related to sexual reproduction in protozoa ?

  List I   List II
(i) Hologamy (a) Plasmodium
(ii) Amphimixis (b) Monocystis
(iii) Anisogamy (c) Trichonympha
(iv) Isogamy (d) Union of pronuclei of the gamets